Access permission for Road_train na Wikipediji, A road train consists of a relatively conventional tractor unit, but instead of pulling one trailer or semi-trailer, the road train pulls two or more of them.

Access permission for Road_train#B-double na Wikipediji, A B-double (B-Train) consists of a prime mover towing a specialised trailer (known as a "lead" or "A"-trailer) that has a fifth-wheel mounted on the rear towing another semi-trailer, resulting in two articulation points.

Access permission for bicycles. For values see above. Usage of bicycle=dismount and bicycle=no will vary in different countries. If according to local traffic rules a bicycle is no longer seen as a bicycle when there's no one driving it, then there's no need for using bicycle=dismount. If the local legislation still sees an undriven bicycle as a bicycle then you may need to use both bicycle=dismount and bicycle=no.

Access permission for light commercial vehicles (LCV) or goods vehicles of category N1 with a maximum allowed mass of up to 3.5 tonnes. In the USA, combined weight 26,000 lbs or less. For values see above.

oneway=yes for traffic direction same as the sequence of nodes of the way (maplint will highlight "true" and "1", so they can be updated to "yes").oneway=no for bidirectional traffic (maplint will highlight "false" and "0", so they can be updated to "no").oneway=-1 for traffic direction opposite to the sequence of nodes of the way (if the way cannot be reversed).

Some road types are assumed to be one-way (e.g. highway=motorway), others are assumed to be two-way (most others). The direction of the sequence of nodes of a way is indicated by sequential order of nodes within the way. Hint: When using the editor JOSM, enable 'arrows'!).

The maplint highlighting will help with updating of the tags which will allow simplification of style sheets to prevent unintentional rendering errors creeping in. See Talk:Key:oneway.